1#!/usr/bin/perl 2 3use strict; 4use warnings; 5 6# 7# Unit tests of _iwrite function 8# 9# _iwrite($self, $data, $start, $end) 10# 11# 'i' here is for 'insert'. This writes $data at absolute position $start 12# in the file, copying the data at that position downwards--- 13# but only down to position $end. Data at or past $end is not moved 14# or even examined. Since there isn't enough room for the full copy 15# (Because we inserted $data at the beginning) we copy as much as possible 16# and return a string containing the remainder. 17 18my $file = "tf27-$$.txt"; 19$| = 1; 20 21print "1..203\n"; 22 23my $N = 1; 24my $oldfile; 25use Tie::File; 26print "ok $N\n"; $N++; 27 28$: = Tie::File::_default_recsep(); 29 30my $FLEN = 40970; # Use files of this length 31$oldfile = mkrand($FLEN); 32print "# MOF tests\n"; 33# (2-85) These were generated by 'gentests.pl' to cover all possible cases 34# (I hope) 35# Legend: 36# x: data is entirely contained within one block 37# x>: data runs from the middle to the end of the block 38# <x: data runs from the start to the middle of the block 39# <x>: data occupies precisely one block 40# x><x: data overlaps one block boundary 41# <x><x: data runs from the start of one block into the middle of the next 42# x><x>: data runs from the middle of one block to the end of the next 43# <x><x>: data occupies two blocks exactly 44# <x><x><x>: data occupies three blocks exactly 45# 0: data is null 46# 47# For each possible alignment of the old and new data, we investigate 48# up to three situations: old data is shorter, old and new data are the 49# same length, and new data is shorter. 50# 51# try($pos, $old, $new) means to run a test where the area being 52# written into starts at position $pos, the area being written into 53# has length $old, and and the new data has length $new. 54try( 8605, 2394, 2394); # old=x , new=x ; old = new 55try( 9768, 1361, 664); # old=x , new=x ; old > new 56try( 9955, 6429, 6429); # old=x> , new=x ; old = new 57try(10550, 5834, 4123); # old=x> , new=x ; old > new 58try(14580, 6158, 851); # old=x><x , new=x ; old > new 59try(13442, 11134, 1572); # old=x><x> , new=x ; old > new 60try( 8192, 514, 514); # old=<x , new=<x ; old = new 61try( 8192, 2196, 858); # old=<x , new=<x ; old > new 62try( 8192, 8192, 8192); # old=<x> , new=<x ; old = new 63try( 8192, 8192, 1290); # old=<x> , new=<x ; old > new 64try( 8192, 10575, 6644); # old=<x><x , new=<x ; old > new 65try( 8192, 16384, 5616); # old=<x><x> , new=<x ; old > new 66try( 8192, 24576, 6253); # old=<x><x><x>, new=<x ; old > new 67try( 9965, 6419, 6419); # old=x> , new=x> ; old = new 68try(16059, 6102, 325); # old=x><x , new=x> ; old > new 69try( 9503, 15073, 6881); # old=x><x> , new=x> ; old > new 70try(16316, 1605, 1605); # old=x><x , new=x><x ; old = new 71try(16093, 4074, 993); # old=x><x , new=x><x ; old > new 72try(14739, 9837, 9837); # old=x><x> , new=x><x ; old = new 73try(14071, 10505, 7344); # old=x><x> , new=x><x ; old > new 74try( 8192, 8192, 8192); # old=<x> , new=<x> ; old = new 75try( 8192, 14817, 8192); # old=<x><x , new=<x> ; old > new 76try( 8192, 16384, 8192); # old=<x><x> , new=<x> ; old > new 77try( 8192, 24576, 8192); # old=<x><x><x>, new=<x> ; old > new 78try( 8192, 9001, 9001); # old=<x><x , new=<x><x ; old = new 79try( 8192, 11760, 10274); # old=<x><x , new=<x><x ; old > new 80try( 8192, 16384, 10781); # old=<x><x> , new=<x><x ; old > new 81try( 8192, 24576, 9284); # old=<x><x><x>, new=<x><x ; old > new 82try(14761, 9815, 9815); # old=x><x> , new=x><x> ; old = new 83try( 8192, 16384, 16384); # old=<x><x> , new=<x><x> ; old = new 84try( 8192, 24576, 16384); # old=<x><x><x>, new=<x><x> ; old > new 85try( 8192, 24576, 24576); # old=<x><x><x>, new=<x><x><x>; old = new 86try( 8771, 776, 0); # old=x , new=0 ; old > new 87try( 8192, 2813, 0); # old=<x , new=0 ; old > new 88try(13945, 2439, 0); # old=x> , new=0 ; old > new 89try(14493, 6090, 0); # old=x><x , new=0 ; old > new 90try( 8192, 8192, 0); # old=<x> , new=0 ; old > new 91try( 8192, 10030, 0); # old=<x><x , new=0 ; old > new 92try(14983, 9593, 0); # old=x><x> , new=0 ; old > new 93try( 8192, 16384, 0); # old=<x><x> , new=0 ; old > new 94try( 8192, 24576, 0); # old=<x><x><x>, new=0 ; old > new 95try(10489, 0, 0); # old=0 , new=0 ; old = new 96 97print "# SOF tests\n"; 98# (86-133) 99# These tests all take place at the start of the file 100try( 0, 4868, 4868); # old=<x , new=<x ; old = new 101try( 0, 147, 118); # old=<x , new=<x ; old > new 102try( 0, 8192, 8192); # old=<x> , new=<x ; old = new 103try( 0, 8192, 4574); # old=<x> , new=<x ; old > new 104try( 0, 11891, 1917); # old=<x><x , new=<x ; old > new 105try( 0, 16384, 5155); # old=<x><x> , new=<x ; old > new 106try( 0, 24576, 2953); # old=<x><x><x>, new=<x ; old > new 107try( 0, 8192, 8192); # old=<x> , new=<x> ; old = new 108try( 0, 11083, 8192); # old=<x><x , new=<x> ; old > new 109try( 0, 16384, 8192); # old=<x><x> , new=<x> ; old > new 110try( 0, 24576, 8192); # old=<x><x><x>, new=<x> ; old > new 111try( 0, 14126, 14126); # old=<x><x , new=<x><x ; old = new 112try( 0, 12002, 9034); # old=<x><x , new=<x><x ; old > new 113try( 0, 16384, 13258); # old=<x><x> , new=<x><x ; old > new 114try( 0, 24576, 14367); # old=<x><x><x>, new=<x><x ; old > new 115try( 0, 16384, 16384); # old=<x><x> , new=<x><x> ; old = new 116try( 0, 24576, 16384); # old=<x><x><x>, new=<x><x> ; old > new 117try( 0, 24576, 24576); # old=<x><x><x>, new=<x><x><x>; old = new 118try( 0, 6530, 0); # old=<x , new=0 ; old > new 119try( 0, 8192, 0); # old=<x> , new=0 ; old > new 120try( 0, 14707, 0); # old=<x><x , new=0 ; old > new 121try( 0, 16384, 0); # old=<x><x> , new=0 ; old > new 122try( 0, 24576, 0); # old=<x><x><x>, new=0 ; old > new 123try( 0, 0, 0); # old=0 , new=0 ; old = new 124 125print "# EOF tests 1\n"; 126# (134-169) 127# These tests all take place at the end of the file 128$FLEN = 40960; # Force the file to be exactly 40960 bytes long 129$oldfile = mkrand($FLEN); 130try(32768, 8192, 8192); # old=<x> , new=<x ; old = new 131try(32768, 8192, 4026); # old=<x> , new=<x ; old > new 132try(24576, 16384, 1917); # old=<x><x> , new=<x ; old > new 133try(16384, 24576, 3818); # old=<x><x><x>, new=<x ; old > new 134try(32768, 8192, 8192); # old=<x> , new=<x> ; old = new 135try(24576, 16384, 8192); # old=<x><x> , new=<x> ; old > new 136try(16384, 24576, 8192); # old=<x><x><x>, new=<x> ; old > new 137try(24576, 16384, 12221); # old=<x><x> , new=<x><x ; old > new 138try(16384, 24576, 15030); # old=<x><x><x>, new=<x><x ; old > new 139try(24576, 16384, 16384); # old=<x><x> , new=<x><x> ; old = new 140try(16384, 24576, 16384); # old=<x><x><x>, new=<x><x> ; old > new 141try(16384, 24576, 24576); # old=<x><x><x>, new=<x><x><x>; old = new 142try(35973, 4987, 0); # old=x> , new=0 ; old > new 143try(32768, 8192, 0); # old=<x> , new=0 ; old > new 144try(29932, 11028, 0); # old=x><x> , new=0 ; old > new 145try(24576, 16384, 0); # old=<x><x> , new=0 ; old > new 146try(16384, 24576, 0); # old=<x><x><x>, new=0 ; old > new 147try(40960, 0, 0); # old=0 , new=0 ; old = new 148 149print "# EOF tests 2\n"; 150# (170-203) 151# These tests all take place at the end of the file 152$FLEN = 42000; # Force the file to be exactly 42000 bytes long 153$oldfile = mkrand($FLEN); 154try(41683, 317, 317); # old=x , new=x ; old = new 155try(41225, 775, 405); # old=x , new=x ; old > new 156try(35709, 6291, 284); # old=x><x , new=x ; old > new 157try(40960, 1040, 1040); # old=<x , new=<x ; old = new 158try(40960, 1040, 378); # old=<x , new=<x ; old > new 159try(32768, 9232, 5604); # old=<x><x , new=<x ; old > new 160try(39994, 2006, 966); # old=x><x , new=x> ; old > new 161try(36725, 5275, 5275); # old=x><x , new=x><x ; old = new 162try(37990, 4010, 3199); # old=x><x , new=x><x ; old > new 163try(32768, 9232, 8192); # old=<x><x , new=<x> ; old > new 164try(32768, 9232, 9232); # old=<x><x , new=<x><x ; old = new 165try(32768, 9232, 8795); # old=<x><x , new=<x><x ; old > new 166try(41500, 500, 0); # old=x , new=0 ; old > new 167try(40960, 1040, 0); # old=<x , new=0 ; old > new 168try(35272, 6728, 0); # old=x><x , new=0 ; old > new 169try(32768, 9232, 0); # old=<x><x , new=0 ; old > new 170try(42000, 0, 0); # old=0 , new=0 ; old = new 171 172sub mkrand { 173 my $len = shift; 174 srand $len; 175 my @c = ('a' .. 'z', 'A' .. 'Z', 0..9, $:); 176 my $d = ""; 177 $d .= $c[rand @c] until length($d) >= $len; 178 substr($d, $len) = ""; # chop it off to the proper length 179 $d; 180} 181 182sub try { 183 my ($s, $len, $newlen) = @_; 184 my $e = $s + $len; 185 186 open F, '>', $file or die "Couldn't open file $file: $!"; 187 binmode F; 188 189 print F $oldfile; 190 close F; 191 192 die "wrong length!" unless -s $file == $FLEN; 193 194 my $newdata = "-" x $newlen; 195 my $expected = $oldfile; 196 197 my $expected_return = substr($expected, $e - $newlen, $newlen, ""); 198 substr($expected, $s, 0, $newdata); 199 200 my $o = tie my @lines, 'Tie::File', $file or die $!; 201 my $actual_return = $o->_iwrite($newdata, $s, $e); 202 undef $o; untie @lines; 203 204 open F, '<', $file or die "Couldn't open file $file: $!"; 205 binmode F; 206 my $actual; 207 { local $/; 208 $actual = <F>; 209 } 210 close F; 211 212 my ($alen, $xlen) = (length $actual, length $expected); 213 unless ($alen == $xlen) { 214 print "# try(@_) expected file length $xlen, actual $alen!\n"; 215 } 216 print $actual eq $expected ? "ok $N\n" : "not ok $N\n"; 217 $N++; 218 219 if (! defined $actual_return && ! defined $expected_return) { 220 print "ok $N\n"; 221 } elsif (! defined $actual_return || ! defined $expected_return) { 222 print "not ok $N\n"; 223 } else { 224 print $actual_return eq $expected_return ? "ok $N\n" : "not ok $N\n"; 225 } 226 $N++; 227} 228 229sub ctrlfix { 230 for (@_) { 231 s/\n/\\n/g; 232 s/\r/\\r/g; 233 } 234} 235 236END { 237 1 while unlink $file; 238} 239 240